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Related Concept Videos

High-Resolution Mass Spectrometry (HRMS)01:15

High-Resolution Mass Spectrometry (HRMS)

The resolution of a mass spectrometer depends on the efficiency of separating ions with different ion masses. The mass of an atom is approximated to the sum of the masses of protons and neutrons inside, considering the masses of protons and neutrons as equal. However, the masses of the proton (1.6726 × 10−24 g) and neutron (1.6749 × 10−24 g) are not truly equal. There is a minor error in the expression of atomic masses relative to the simplest atom of hydrogen. For example, the mass of helium...
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A Multimodal Wide-Field Fourier-Transform Raman Microscope
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High resolution hadamard transform spectrometer.

P Hansen, J Strong

    Applied Optics
    |January 30, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces an infrared (IR) spectrometer using advanced components like alkaline halide lenses and a cooled germanium bolometer detector. It offers both conventional and multiplex scanning modes for versatile spectral analysis.

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    Area of Science:

    • Spectroscopy
    • Infrared (IR) Technology
    • Instrumental Analysis

    Background:

    • Development of advanced spectroscopic instruments is crucial for detailed chemical analysis.
    • Infrared spectroscopy provides unique molecular fingerprinting capabilities.
    • Optimizing spectrometer design enhances data acquisition and analytical performance.

    Purpose of the Study:

    • To describe a novel infrared spectrometer design.
    • To present two distinct operational modes: single slit (conventional) and multiplex (Hadamard) scans.
    • To illustrate the instrument's capabilities with sample spectra.

    Main Methods:

    • Employs alkaline halide lenses for optical components.
    • Utilizes an echelle grating for spectral dispersion.
    • Features a cryogenically cooled doped germanium bolometer as the detector.
    • Incorporates two scanning modes: conventional and Hadamard transform.

    Main Results:

    • The spectrometer is equipped for both single-slit and multiplex (Hadamard) scanning.
    • Operational mode selection is based on signal strength, noise, scanning time, and computing resources.
    • Sample spectra demonstrating the instrument's performance were successfully acquired.

    Conclusions:

    • The described IR spectrometer offers flexible operation through its dual scanning modes.
    • The instrument's design, featuring a cooled bolometer and echelle grating, is suitable for various analytical needs.
    • The presented sample spectra validate the effectiveness of the developed spectroscopic system.